So what does friends with benefits mean?

The "benefit" here only means sex? I mean I have this particular neighbour who is a single father and I sometimes help him with his son and he sometimes keeps an eye on my dog when I’m out for few days. Are we friends with benefits?
Update: Hey LQ and MoM... How are you doing?:)
Update 2: Hey Temple, only if you were my neighbour...

Hey Evil Twin...
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